Question

a cuboid l=8 b=6 h =4 find its area of four wall

Answer 1

area of wall =(8+6)×4
=14×4
=56 m

Answer 2

L=8,b=6,h=4
Four wall means the the walls excluding the top and the bottom floor,
Area of two walls that are opposite to each other are equal ,so..
2[(8*4)+(6*4)]=2*56=112unit sq.